Why is the verification code of 4399 game box wrong?

First of all, the page refresh problem.

The verification code of the login page will change with each refresh. If you are prompted that the verification code is wrong, the system will change the verification code. Is this a possible page or a previous verification code? In other words, you will not enter the same registration code twice. Just re-enter a new verification code after seeing the verification code change.

Second, the full/half angle problem of input method

The full-angle/half-angle input numbers of the input method are different, that is, the full-angle number 1234 and the half-angle number 1234 are different. The verification code input of Sina blog only supports half-angle number and full-angle number input. Although the figures are correct, they still cannot be verified.